Kilotest: Diagnoses of attribute value invalid violation by HTML element 398 on Cátedra UNESCO Legislación, Sociedad y Patrimonio page

Basics

About the Cátedra UNESCO Legislación, Sociedad y Patrimonio page

• URL: https://catedrapatrimonio.wixsite.com/ugto
• Tested 13 days ago by job auj on 2026-07-07 at 18:07

About HTML element 398

• Tag name: filter
• Text: [not applicable]
• Start tag: <filter id="4e358e3c-c4cc-411c-8da6-747bbbb99bfa_audioOn-comp-m6b5lkf7" height="200%" width="200%" y="-50%" x="-50%">
• XPath: [not obtained]
• Bounding box: x = 0, y = 0, width = 0, height = 0

About the attribute value invalid issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1

Diagnoses

Here is how rule engines diagnose the attribute value invalid issue for HTML element 398 of the Cátedra UNESCO Legislación, Sociedad y Patrimonio page.

1. Bad value 4e358e3c-c4cc-411c-8da6-747bbbb99bfa_audioOn-comp-m6b5lkf7 for attribute id on element filter: Not a valid XML 1.0 name.

   Tool: Html Checker API (World Wide Web Consortium)